Locking strip



H. LEVISON LOCKING STRIP March 8, 1932.

Filed Aug. 9. 1929 A TTORNE YS Patented Mar. a,Y 1932/ UNITED/STATES HARRY LEvIsoN, vor sAN .FaANcIsco,. CALIFORNIA i LOCKING STRIP Appuatign inea August 9, 1929. `serieu no ssavi'r,

My invention relates tothe means. rwhich are utilized'for securing to a suitable mounting block unmounted printing plates such as electrotypes, stereotypes, half tones, zinc y Setchings and other plates useful in printing and alliedarts. This means is conveniently utilized in conjunction with the mounting means described and claimed in my copendf ing application Serial Number 251,029, tiled v February l, 1928. As is there set forth,fit is possible to mount the plate in the form detachably to the block or blocks by means of a simple, inexpensive and readily Vmanipulated they -are suited to the matter to be illustrated.V

lAccordingly,it Vis'niost convenient to mount Vthe plate upon a plurality of blocks so related that thearea necessary to adequately support the lplate is available.

. set-up is substantially complete, the printing yplate isr secured to the blocks by the previously mentioned mounting means and is locked-within arsuitable enclosing means as a chaseby lockingvmeans such as quoins.

When the chase is subsequently handled, it ,35 sometimes happens that .one'of the several,

blocks supporting the plate will, for various reasons, slipout of; position. This is an un-` desirable feature, and,-in general, it is lthe object of my invention toV provide `suitable 49' means for kthe locking of the .various blocks together in such a manner that they cannot V'Subsequently be eadydisplacfed from then; a suitable materiaLeither wood, composition position.

Another object of myinventionistheposiff 4 5 'tion of a locking means for securingthe supportingblocksv together, l,which can be utilized. in conjunction with the clamping means n. aforementioned co-pending` described in my pplication; r

"p59 A ifurtherobject of my invention; is the understood `that the claim is to be accorded When the provision, infcombinationwith blocks having a groove orv channehof a locking strip having an outwardly-extending projection or teat, which is adapted to engage the Vchannel. inthe blocks to 'secure themtogetherfb if? My inv'entio'n possessesother advantageous features and objects, some of which,"with the foregoing, willybe set forth in the following description of my inventionl It is to be lunderstood that I do not limit myself to' the showingmade by'the'descriptio'mas I may adopt various forms of my invention within the scope of the claim. Further, it isto be a range of equivalents consistent with the '35 state of the prior art.V W -jIn the" drawings to which reference will be made inthe accompanying` description: VFigure lis -a'plan view of achase and a Drinting plate` the printing plate 'being bro- 70'y ken away to illustrate the manner of providing the'blocks tosupport theV plate, and of the locking strip for 'securing the several blocksV together. ,"Within'the chase. suitable 'I Y furniture and *lockingv means have been shown `for ypositioning 'the several elements Within the chase.YV K i, n

VFigure 2 is a transverse section taken on the line 2-#2 of Fig. l'. l

Figure 3 is a perspective view of a. chan# ueled/'block` which'is readily utilized in combination `with theloeking` strip `means.

Figure 4 is a view in persnective'of one form ofstrip`V which I have successfully utilized; Y

YFigure 5 isk another form of locking strips which I have employed@ A In mounting a *printing plate within a chase; in accordance with my invention. a 90 plurality of then blocks `6. are VconvenientlyA provided. These blocks bef formed, 'of

or metal.Vv `Each of the several'blocks" has a 'laterally I@XSESIlClng groove, Vchannel or in- 975.y

dentation 7 This channelrpis adapted to cOfoperativelyengage anextendingteat or projection 8, provided upon clip 9. As is de scribed iin` my co-pending application, the

clip, uponfthe locking of the chase,` posjitively .190

PATENT ori-fics l' secures and positively presses the printing plate down upon the supporting block.

Since it is most convenient and economicalto provide the support VJfor the printing plate by combining a number of the blocks to secure the desired area, a plurality of these are usually assembled muchafter the fashion shown. in Fig.A 1, to support, the. plate in the form. However, upon the handling of the chase or other form retaining means, subsequent to the locking up, it'L sometimes happens that the blocks become displaced from their position. This is extremely undesirable, as mav be readily imagined. To overcome this difficulty, I have provided,in accovclancel with my invention,y clip. meansl for the blocks against displacement. This clip means is conveniently formed by' a sxr 16,` as is shown in Fig; 5, having extending" projections or teats17,.which are adapted' to engage the channel or groove in the blocks.y This strip is conveniently insettled between adiacent blocks. as I have in,- dicated at 18 in. Fig. 2', with the. projections 1:7 in engagement with the channelsin adjacent Blocks. Upon a locking of the locking means, the blocks are secured together'within the chase, andv cannot be subsequently displnced. relative to cach other.

Im those. instances, Where it is desirable to lock several blocks together and where itI is desired that the channel or groover in the block'lzre` still available for cooperation with the clamping'means such asthe clip 9, I prefeznbly'fom the strip 2'1', as is shown in Fig; 4l, 'rnV such a'- manner thatv a` groovey 22, is pro-y v'idbd in the strip, and forms a projection or tent 23. Upon a positioning of" the strip with theY projection or tent 23 engaging a channel in the block, theV groove 22 is available forceoqpsratison with the'elamping means. Thus, as I have indicated at 26, the,I strip 21 isprovided extending` along the outer edge of the supporting blocks, with the groove so disposed that it is readily available for cooperation with the clamping means. Y

. In those instances where the blocks do not fit exactly' to the area, of the plate to,y be g mounted, minor variations in size can be cared for by suitable combinations ofV the strips 16 and 21. It is ef course apparent that further modifications, and uses will be readily realized by those skilled in the. art, upon consideration of the forms, of my ,invention which I have described,without, dcparting from. the spirit thereof..

I claim: Y n

In combination with a block for` detachably supporting a printing plate, said block having, a V-shaped' groove ext-ending along all sides thereof and adapted to be engaged to press a printing plate down upon ythe block, c-l-ip means for securing the block to a second block having a like V-shaped groove extending along all sides of the same, the

my hand.

HARRY LEVISON. 

